94755721 has 2 divisors, whose sum is σ = 94755722. Its totient is φ = 94755720.

The previous prime is 94755707. The next prime is 94755757. The reversal of 94755721 is 12755749.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65205625 + 29550096 = 8075^2 + 5436^2 .

It is an emirp because it is prime and its reverse (12755749) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94755721 - 2¹³ = 94747529 is a prime.

It is not a weakly prime, because it can be changed into another prime (94725721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47377860 + 47377861.

It is an arithmetic number, because the mean of its divisors is an integer number (47377861).

Almost surely, 2^94755721 is an apocalyptic number.

It is an amenable number.

94755721 is a deficient number, since it is larger than the sum of its proper divisors (1).

94755721 is an equidigital number, since it uses as much as digits as its factorization.

94755721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 40.

The square root of 94755721 is about 9734.2550305609. The cubic root of 94755721 is about 455.8988326533.

The spelling of 94755721 in words is "ninety-four million, seven hundred fifty-five thousand, seven hundred twenty-one".